Balanced window.



No. 821,510. PATENTBD MAY 22, 1906. A. KNOX.

BALANGED WINDOW.

APPLICATION FILED AUG. 2, 1905.

m v E@ WVM/leases S n f PATENTED MAY 22, 1906.

A. KNOX. BALANCED WINDDW. APPLICATION rlnED AUG. 2, 1905.

2 SHEETS-SHEET 2.

N .MWL J/ML fVweM/koz @5% Gi'oznci 6 y @uli/14 @was W @www Q )3mm Y Y To all whom it may concern:

UNTED STATES PATENT OFFIOE.

ALEXANDER KNOX, 'OFBRISBANE QUEENSLAND, ASTRAL1A',ASSIGNOR TO AUSTRAL WINDOW BALANCE COMPANY, A CORPORATION OF MAINE.

BALANCED WINDOW.

No..e21,51o.

Specification of Letters Patent.

Patented May 22, 1906.

Application nea iugm 2, 1905. serial No. 272.309.

Beitknown that l, ALEXANDER KNOX, a subject ofthe King of Great Britain, and a resident of Brisbane, Queensland, Commonwealth of Australia, temporarily residing at New York, in the county and Staterof New York, have invented certain new'andf useful Improvements in yBalanced Windows, oi which the following is a specification, refer- 1o ence being had to the drawings accompany- 1n and forming partiof the same.`

. y invention relates to so-called balanced windows of the type described in United States Letters Patent to E'. G. Abell,

No. 788,182,[granted A ril 25, 1905, in whichn the upper an lower sas es are pivotally corinected with the frame in such-manner as to permit substantially vertical movement of thelsashes and permitting a limited swingi'n zo or turning movement of each on its pivota connection.

The'chief object of my present invention is to provide such a construction in awindow of that type as will permit not only the same vertical and limited swingin movement of the sashes, but /alsopermtlseither or both to be .ff--swungoiit'bf the frame, causing them to assume a position Ytransverse thereto andieven allowing them to bey entirely lnverted. Such 3o movement or movementsoi' the sashes causes them to present their outer sides to the apartment, thereby rendering all parts of the same readilyVaccessible-for'cleaning without it be- -ing necessary for the attendant to stand upon V the outer sill--a hazardous undertaking at best-or even to reach out of the window in such a way as to incur danger. Although capable of. these various movements the window ma nevertheless be lockedin its closed 4o or part y-opened positions to renderl the same secure against intruders. l

Theinvention, which consists of the novel VVfeatures of construction, arrangementsvof' parts, and combinations/oi/eleIl/ents hereinafter described, vandffnore particularly-j set forth in the/alarms, will be more clearly understcodwhen described in connection with )he/accompanying drawings, wherein Figure 1 is a ont elevation of the pre- 5o ferred embodiment oi my invention, showing both sashes in closed position. Fig. 2 1s a central`vertical section of Fig. 1. Figs. 3, 4, and 5 are similar sections, but showing the sashes in different positions. Fig. 6 shows a detachable stops in position. Fig. 7 is a detailed view showing a double-shot bolt which ma be used in connection with the lower sas Fig. 8 is a perspective view 4showing the lower sash swung entirely out of engagement 'with the frame. A The upper vand lower sashes oi the window are' indicated b "1 and 2, respectively, and 3 indicates the ame therefor. 4 and 5 are balancing-levers, one or both of which may be'used, pivoted, preferably, at their middle points to the inner sideoi the frame 3. The upper ends ofthe levers or holders are pivoted to plates 6 7, carried by the upper sash, and the lower ends of the same are pivoted to similar lates 8 9 on the lower sash.

l On the inside ofthe frame adjacent to the upper sash are vertical grooves, one of which is shown at 10, Figs. 2 to 5 inclusive, while similar grooves, as 11, are rovided adjacent to the lower sash. Exten ing laterally from the toprailoi the upper sash and from the bottom rail of the lower sashare studs or Vpins 12.13,'engaging the upper and lower vertical grooves, res ectively. It will now be clear that .ifthe ower sash be lifted and at the same time the upper part thereof ushed out the pinsor studs extending from t e two will slide in their grooves and the sashes will also turn on their pivots, causing the holders or levers 4 5 to assume positions out ofthe vertical. The window is thereby opened at top and bdttom and also at the center by the lateral separation ofthe two sashes.

In order to give the sashes a Wider ran e of movement, as hereinbefore mentioned, tile following devices'are provided: 12a and 13'1 are stops( ory iillets removably securedIr in grooves 14 15 parallel with the before-rilentioned grooves 10 and 11,"while extending transversely across 'the ,iframe rom 'the grooves 10 and 11 are releasing chan/nels or grooves 16 17. It will now be clear that if the stops 12 and 13a be removed the studs which extend laterally from the sashes may be caused to leave their vertical grooves and pass into the transverse slots4 16 17, respectively, thereby ermitting the sashes to swing freely on t eir pivots andto assume various positions more or less transverse to the frame, as shown in Fi s. 3 and 4. Continuing' the movement of t e sashes in the direction oi the arrows in Fig. 4 and also turnconstruction of thumb-screw for securing the ICO 

